baber/WOPTO huggingface dataset:
Patent GB-474297-A (GB)
Title: Improvements in or relating to the manufacture of luminescent materials and to means for illumination comprising them
IPC: C09K11/06
Filed: 1936-04-28
Abstract: 474,297. Luminescent materials associated with electric discharge devices. GENERAL ELECTRIC CO., Ltd., McKEAG, A. H., and RANDALL, J. T. April 28, 1936, No. 12066. [Class 98 (i)] The luminescence and light-fastness of a rhodamine dye dispersed in a resinous binder are improved by mixing the solid dye with a molten resin in the absence of any solvent adapted to dissolve both the dye and the resin. Resins of the glycerine-phthalic anhydride and formaldehyde-urea types may be used. Resins sold under the Registered Trade Mark "Paralac," and particularly Nos. 1001, 1101 and 1201 are preferred. The dye/resin ratio is 1 : 100 or 1 : 200. When such materials are used with a high pressure metal vapour lamp, they are applied to surfaces other than the envelope of the discharge (e.g. to a reflector fitting), preferably in the molten state, the receptive surface being heated to about 200‹ C. Reference is made to a known method in which phosphorescent or luminous salts are mixed with powdered resin and moulded under heat and pressure ; and also to the process disclosed in Specification 16519/15, [Class 95].
Patent GB-235165-A (GB)
Title: Improvements in power transmission couplings for locomotives and similar vehicles
IPC: B61C9/30
Filed: 1925-05-09
Abstract: 235,165. Aktiebolaget Ljungstr÷ms Angturbin. June 7, 1924. [Convention date]. Addition to 233,349. Universal joints for coupling the track wheels of locomotives and similar vehicles with driving gear-wheels. Links are employed to connect spider arms on a floating sleeve with similar arms on the gear-wheel and track-wheel, respectively, as in the parent Specification. The links are flexible and comprise discs 31, with spherical or other curved interengaging surfaces arranged between a central block 30 and end abutments 35 sliding in recesses in the spider arms 9, 10. Rings 32, 33 preferably arranged in two layers support the discs and may be arranged to limit their lateral movement. The curved surfaces may be formed of different curvatures on opposite sides of the points of contact.
Patent GB-893557-A (GB)
Title: Improvements in mechanical creepers for mine cars and the like
IPC: B61J3/04
Filed: 1959-04-09
Abstract: 893,557. Driving chains. SHAW, D. G. July 6, 1960 [April 9, 1959], No. 12096/59. Class 24. [Also in Group XXX] In a mechanical creeper consisting of a sprocket chain providing an undulating surface for co-operation with live or dummy axles on the underside of mine cars so as to retard or control such cars. The undulating surface is provided by dog members or link extensions carried by the chain which stand proud of the operative run of the chain each dog member having a profile form which provides a plurality of undulations along the operative run of the chain. In the arrangement shown links 11 of a sprocket chain are provided with an undulating upper edge 12 to engage a dummy or live axle 15 of a mine car. The links 11 are slotted at 22 at one end to facilitate replacement. Links 2 bridging the gap between the ends of links 11 have an upper edge 19 lying in the plane of the roof 20 of the undulating edge 12 of the links 11.
Patent GB-560904-A (GB)
Title: Improvements in television transmitting tubes
IPC: H01J31/48
Filed: 1942-08-27
Abstract: 560,904. Cathode-ray tupes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 27, 1942, No. 12097. Convention date, Jan. 29, 1941. [Classes 39 (i) and 40 (iii)] A television transmission tube of the type in which the.whole beam path is immersed in an axial magnetic field from coil 15, comprises in order along the tube an electron gun 3, first deflecting plates. 20, 21, an electron multiplier 32 ... 35, beam lifting plates 24, 25, second deflecting coils 22, 23, and a target 2. Both the gun and the multiplier are offset from the target centre, on opposite sides. The beam from the gun, after scanning deflection perpendicular to the paper is permanently lifted by plates 24, 25 to bring it opposite the target centre. The 'returning electrons are again lifted so as to strike the first electrode 32 of the multiplier, 'the electrodes of which have a width, perpendicular to the paper, greater than the first scanning. Apertured screens 50, 51, 54 are connected to the earthed gun anode 12. Electrodes 24, 25 are quarter-cylindrical coatings on the envelope 1, and the lifting space is rendered equipotential by similar earthed coatings 60, 61, completing the cylinder. A further coating electrode 71 enables the field directly in front of the target to be adjusted to eliminate rotational distortion of the magnetic focussing field. The target 2 is a photoelectric mosaic maintained nearly at cathode potential and reflects electrons to a variable extent dependent on the image element. To maintain zero axial field in the lifting space irrespective of the position of the'beam in the first scanning deflection, a small fraction of the scanning voltage from resistance 67 is added to the constant potential applied to the plates 24, 25 by battery 65. To eliminate the effect of photo-electrons collected by the multiplier, a very high frequency may be applied to the target backing plate 6. The useful output at the electrode 35 will then be modulated at that frequency and can be filtered from the photocurrent, which is unaffected by the potential of the target. Specifications 542,219 and 543,890 are referred to.
Patent GB-163691-A (GB)
Title: Improvements in high frequency telephone systems
IPC: H04J1/14
Filed: 1921-04-27
Abstract: 163,691. Ges. f³r Drahtlose Telegraphie. May 20, 1920, [Convention date]. Multiplex systems and apparatus. - A normal exchange switchboard is adapted to effect selective calls to a distant exchange in a system in which modulated high-frequency currents are carried simultaneously with ordinary low-frequency currents over the same pair of line wires. By sending direct or alternating impulses over either or both branches of the line, seven different calls can be made. As shown in Fig. 1, the insertion of a plug in jack 1 energizes a relay A1 and sends a positive direct-current impulse from the battery B1 through the bus-bar L and choke Db to the b-branch, and thence through the chokes Db<1> and Sb to the polarized relays R1, R2, the former of which only responds. Similarly, by plugging-in jack 2, a negative impulse from the battery B2 actuates the relay R2. The jacks 6 and 7 likewise control the relays R6, R7, the current impulses in this case passing over the busbar to the a-branch of the line. The jack 3 sends alternating current from an alternator M over the b-branch, the other pole of the alternator being simultaneously earthed. This current passes across the condensers C2, C4 to actuate the relay R3. Similarly, by plugging-in the jack 5, alternating-current impulses are sent over the abranch, and through the condensers C1, C3 to operate relay R5. When the jack 4 is plugged, the alternating-current circuit is formed by both a and b branches of the line; this energizes the relay R4 only. In an alternative arrangement, the selective calls are effected by means of stepby-step switches which, on reaching the desired positions, are automatically stopped there and actuate the indicator relays. If the system is confined to only one additional high-frequency conversation, the necessary selective calling-apparatus can be controlled by a single alternator such as M.
Patent GB-1069031-A (GB)
Title: Improvements in or relating to apparatus for controlling the height of a column of liquid
Inventor: EVANS BRIAN NEVILLE
IPC: G01L27/00
Filed: 1963-03-27
Abstract: 1,069,031. Vacuum gauges. EDWARDS HIGH VACUUM INTERNATIONAL Ltd. March 26, 1964 [March 27, 1963], No.12153/63. Heading G1L . A reservoir of mercury 1 for a McLeod gauge is confined in a chamber 2 divided by a diaphragm 3 connected by a plate 4 and link 5 to a lever 6 pivoted to a post 7 and the arrangement is such that when the gauge is not in use the lever 6 is raised to the vertical position against a stop 9 to suck the mercury into the chamber 1 from the column 10 and when the gauge is in use the lever 6 is moved to the horizontal position, limited by an adjustable stop 8 to permit the mercury to raise in the column 10 to a height determined by the atmospheric pressure action on the diaphragm 3 if the upper end 11 of the column is under a vacuum. In alternative arrangements the lever 6 acts on the diaphragm through a pivoted lever, Fig. 5 (not shown), or a cam, Figs. 7 and 12 (not shown). In a further arrangement, Figs. 9-11 (not shown), the mercury is arranged above the diaphragm and the lever 6 operates on the underside of the diaphragm through a linkage mechanism which passes through a dead centre position to hold the diaphragm in the inoperative position. The diaphragm may be replaced by a piston and the mercury by some other liquid.
Patent GB-402994-A (GB)
Title: Improvements in or relating to vehicle bodies
IPC: B61D17/04
Filed: 1933-04-26
Abstract: 402,994. Railway-vehicle bodies and undercarriages. BUDD MANUFACTURING CO., E. G., 2500, Hunting Park Avenue, Philadelphia, U.S.A.-(Assignees of Ragsdale, E. J. W.; Curren Terrace, Norristown, and Dean, A. G.; Avon Road, Narberth, both in Pennsylvania, U.S.A.) April 26, 1933, No. 12164. Convention date, April 27, 1932. [Classes 103 (iv) and 103 (vi).] The underframe or principal load-sustaining structure of a railway or like vehicle comprises longitudinally extending frames 21, Figs. 2 and 3, of narrow width and considerable depth interconnected by transverse frames 22 of less depth, a level upper surface being formed for the attachment of the floor, and the elements preferably being constructed from stainless steel strips and united by welding. The longitudinal side frames 21 comprise an upper inverted channel member 85 and a lower channel member 86, which are connected at intervals by diagonal channel-section braces 87 and are fitted with cover plates except at the parts where the braces 87 enter the opposed channels. United to these longitudinal frames at spaced intervals are the outer posts 42 supporting the body, and short vertical posts 89, with which and additional braces 23 the transverse frames 22 are associated. These latter frames each comprise upwardly and downwardly facing channels 91, 2, Fig. 11, fitted with cover plates 93<a>, side plates 93, and at spaced intervals vertical members 95 Fig. 3. Between certain pairs 22a, Fig. 5, fo the transverse frames are arranged short cross beams 27, 28 for the purpose of supporting the centre bearing plate 29, and from the frames 22<a> extend diagonal beams 102. Between the other pairs of frames 22 are disposed short central cross beams 101. The posts 42 together with curved corner members 45 and carlines 46 form a series of spaced hoops for supporting the roof and side wall elements, and are all of box section formed by the combination of channel members with cover plates, or of two side plates with cover plates. Both above and below the window spaces 58, Fig. 3, the posts 42 support externally a number of longitudinal angled stringers 49, and four mouldings 52, between which are secured the concave body panels or sheathing 50. On the interior of the vehicle the window sill strips are suitably bent for the retention of the internal upholstery. The roof is strengthened by the provision of a number of spaced purlines 76 of Z-section, and is finished internally with sound-deadening upholstery material 78.
Patent GB-771683-A (GB)
Title: A bath for the electrolytic bright deposition of metals
IPC: C25D3/02
Filed: 1954-04-27
Abstract: Urea-acrolein type condensation products suitable as brighteners in electroplating baths and comprising acrolein and/or an a -alkyl acrolein with or without another aldehyde, and urea, thiourea, and/or an alkyl urea are formed by (a) heating at 150 DEG  C. with triethylene glycol a previously warmed (60 DEG  C.) aqueous mixture of urea, hexamethylene tetramine, and acrolein; (b) heating under reflux at 140 DEG  C. with ethylene glycol an aqueous mixture of guanidine, acetaldehyde, and acrolein with a small amount of sodium acetate; (c) heating under reflux at 120 DEG  C. a mixture of urea, a -methyl acrolein, ethylene glycol, and paraformaldehyde with a small amount of aqueous caustic soda; (d) heating successively at 50 DEG C. and 80 DEG  C. a mixture of dimethylurea and acrolein containing a small amount of aqueous caustic soda; or (e) heating at 50 DEG  C. an aqueous mixture of urea, thiourea, a -methyl acrolein, and acrolein with a small amount of caustic soda.  Similar products are obtained by (f) heating initially to 50-70 DEG  C. and later to 80-150 DEG  C. urea, thiourea, or their mono-substitution derivatives and acrolein or a -substituted acroleins and other aldehydes in the presence of compounds containing hydroxyl groups as in French Specification 895,231; (g) condensing urea with acrolein in the presence of a catalytic quantity of thiourea as in German Specification 745,422; or (h) condensing urea with acrolein and simultaneously or subsequently in acid medium with formaldehyde as in German Specification 748,842. Specification 260,288, [Class 2 (iii)], also is referred to.
Patent GB-485707-A (GB)
Title: Improvements in buckles or fastenings for braces, bands and the like
IPC: A41F3/02
Filed: 1937-04-29
Abstract: 485,707. Strap and like fastenings. WALKER, Ltd., T., WALKER, G. T., and BRANT, L. T. April 29, 1937, No. 12185. [Class 44] A fastening for straps and the like, shown as applied to detachably connecting a pair of brace tabs 1 to the brace strap Z, comprises a plate 5 with an aperture 6 having a lug 7 projecting inwards from its lower edge and a pair of lugs 8 projecting inwards from the upper edge. Lugs 7, 8 are off-set from the plane of member 5. The co-operating member comprises a plate 10 cranked at 13 and formed at the cranked portion with a slot 14, the head 12 above the crank 13 having a narrow central tongue 15 curled as shown. To connect the parts, the head 12 is passed through the aperture 6 in inclined position, Fig. 6, slot 14 being then engaged over lug 7. The parts are then moved into line so that the head 12 seats against the lugs 8, the tongue 15 entering the gap 9 between lugs 8 and snapping past the upper edge of aperture 6, to prevent accidental release. The two members have slots 4, 11 for permanent connection to the parts 2, 1 respectively.
Patent GB-976361-A (GB)
Title: Improvements in or relating to electronic time relays
IPC: H01J17/04
Filed: 1961-04-05
Abstract: 976,361. Relay circuits. ELESTA Ltd. March 5, 1961 [Jan. 25, 1961], No. 12189/61. Heading H3P. A time delay circuit comprising a coldcathode gas-filled triode 1 connected in series with a relay 2 has an improved adjustment of the delay period by means of a variable resistor 10 which controls both the bias on the triode 1 and the voltage from which the delay capacitor 6 is charged. As described, capacitor 6 is charged via resistor 7 until the triode 1 fires, energizing relay 2. Contacts 5 of relay 2 discharge capacitor 6. Switch 20 is opened to release the relay and reclosed to initiate a further delay period. At low resistance settings of the variable resistor 10, a large positive bias is available from resistor 8, and a large charging voltage is available, hence the triode fires after a short delay. As the setting of variable resistor 10 is increased, both the bias and the charging voltages are reduced so that the delay is increased. A 13-1 variation in delay period is achieved by the use of specified component values. The variable resistor 10 may be replaced by a potentiometer across the stabilizing tubes 12, 13. The variable resistor or potentiometer may be located remotely. The stabilizing tubes 11, 12, 13 may be omitted and the relay 2 may be connected in the cathode circuit.
Patent GB-310009-A (GB)
Title: Improvements in and relating to spinning boxes for use in the manufacture of artificial silk and the like material
IPC: D01D7/02
Filed: 1929-04-19
Abstract: 310,009. British Thomson-Houston Co., Ltd., (Assignees of Compagnie Fran- þaise pour l'Exploitation des ProcÚdÚs Thomson-Houston). April 19, 1928, [Convention date]. Spindle apparatus. - Spinning boxes used in the manufacture of artificial silk and like material of the kind formed of woven fabric impregnated with insulating material, are formed of fabric composed of metallic and textile threads. The warp threads may be textile and the weft metallic, or vice versa, or both warp and weft may consist of metallic and textile threads arranged alternately, or textile fabric impregnated with artificial resin as described in Specification 293,060 may have metallic threads incorporated but not woven therein. The metallic threads may be arranged so as to run in the direction of the greatest strain to which the box is subjected. The method of construction of the box may be that described in Specification 293,060, the fabric either before or after treatment with a synthetic resin, such as that produced from cresol and formaldehyde, being cut into a number of shapes and assembled into a stack and subjected to heat and pressure to cure the binder. Parts of the box not subjected to high centrifugal force may be made of ordinary textile fabric impregnated with artificial resin or they may be made of any suitable moulded material. The Specification as open to inspection under Sect. 91 (3) (a), comprises also the use of the material in the construction of parts of spinning and weaving machines other than spinning- boxes. This subject-matter does not appear in the Specification as accepted.
Patent GB-573051-A (GB)
Title: Purification and stabilization of formaldehyde
IPC: C07C45/79
Filed: 1942-08-31
Abstract: Aqueous solutions of formaldehyde are purified by passing them through an anion exchange material and then, if required, through a kation exchange material.  The anion exchange material may be a resin, prepared, for example, as follows: a mixture of water, formalin, soda ash, urea and guanidine nitrate is first refluxed and then stirred with hydrochloric acid in another vessel while heating to 90 DEG  C.  After cooling, the resulting gel is ground and dried at 100 DEG  C.  Other anion exchange materials mentioned are: biguanide-formaldehyde resin, guanylurea-formaldehyde resin and m-phenylene diamine-formaldehyde resin.  When not sufficiently insoluble, the resins may be condensed with urea, guanamine or an aminotriazine such as melamine.  Guanidine carbonate, guanidine sulphate, biguanide sulphate, biguanide nitrate, guanylureasulphate, guanylureanitrate and guanylureacarbonate are specified starting materials.  The anion exchange materials are activated by washing with aqueous alkalies or organic bases.  The cation exchange materials which are mentioned are: catechol - tannin - formaldehyde, polyhydric - phenol aldehyde and aromatic sulphonic acid-formaldehyde condensation products, zeolites and sulphonated coal, peat, lignite or other carbonaceous material. They may be regenerated by treating with dilute hydrochloric or sulphuric acid and then washing with water.  The formic acid is removed from the treated formaldehyde and not merely neutralised so that the formaldehyde is especially suitable for resin formation, e.g. with urea, phenol, sulphonated phenols, cresols, amylphenol, hydroxydiphenyl, resorcinol, thiourea, alkyl and aryl ureas, dicyandiamide, biguanide, guanylurea, melamine and guanamines.  Solutions of formaldehyde may be stabilised by the mere addition of the anion exchange materials.  Examples are given showing the treatment of formalin with both cation and anion exchange materials.  Specifications 561,896, 562,402 and 562,403 are referred to.
Patent GB-513969-A (GB)
Title: Improvements in or relating to belt conveyors
IPC: B65G45/00
Filed: 1938-04-25
Abstract: 513,969. Endless-belt conveyers. INTERNATIONAL COMBUSTION, Ltd., DAVIDSON, G. W., and HERBERT, S. L. April 25, 1938, No. 12328. [Class 78 (i)] Spillage which falls from the upper run 2 on to the lower run 1 is returned to the upper run by a rotary elevator 10 supported by friction driving rollers 9. The rollers are driven through worm gearing 7, 8 by the guide pulley 4.
Patent GB-1429129-A (GB)
Title: Launching tube for a self-propelled missile
IPC: F41F3/04
Filed: 1974-03-20
Abstract: 1429129 Launching tube WEGMANN & CO 20 March 1974 [21 March 1973] 12359/74 Heading F3C A launching tube for a self-propelled missile has a slot 1 formed therein to receive a cam 5 of the missile (not shown) a side 6 of the slot 1 having a leaf spring 9 secured thereto which, when the missile is mounted in the launching tube, urges the cam 5 against a side 4 of the slot. The leaf spring 9 has one end retained by a pin or screw 12 and the other end is retained within a recess in a member 11. A recess 7 is provided in a segment 3 of the tube and a spring 8 is mounted therein so as to reinforce the leaf spring 7. The latter may be coated with a synthetic plastics material or may be made of synthetic plastics material.
Patent GB-855754-A (GB)
Title: Photographic objective
IPC: G02B13/00
Filed: 1959-04-13
Abstract: 855,754. Photographic objectives. ZEISSSTIFTUNG C., [trading as ZEISS, C. (Firm of)]. April 13, 1959 [July 5, 1958], No. 12373/59. Class 97(1) A photographic objective comprises on each side of a central air space three components of which the front and middle one of the three simple components to the front of this air space are convergent and the rear one of these components is a divergent meniscus simple lens while the middle and rear ones of the three components to the rear of this air space are convergent and the front one of these components is a divergent meniscus. This divergent meniscus is cemented to the simple convergent element next to it and the dispersive surfaces bounding the central air space have radii with numerical values lying between 0À25F and 0À65F. The divergent simple meniscus to the front of the air space has a thickness between 0À04F and 0À18F and a front surface having a radius between 0À35F and 0À65F. Further the distance between the front surface of the front component and the rear surface of this divergent meniscus is between 0À28F and 0À42F. Preferably the two surfaces having the strongest refractive power in the objective are separated by a distance between 0À5F and 0À85F and also between M and 1À6M where M is the arithmetical mean of the numerical values of the radii of these two surfaces. It is also preferred that the cemented doublet to the rear of the air space should have a thickness between 0À25F and 0À45F. Optical data are given for two embodiments of the objective shown, wherein the divergent and convergent components Liv, Lv are cemented together, and the surfaces of highest refractive power are r5 and r10.
Patent GB-1331801-A (GB)
Title: Hose nozzle extension unit
IPC: A62C31/22
Filed: 1971-04-30
Abstract: 1331801 Pipe couplings M CHAMPAGNE and J RICHARD 30 April 1971 [1 May 1970] 12404/71 Heading F2G [Also in Division A5] An extension unit 10, Fig. 1, for mounting between five hose 12 and nozzle 14 comprises manually portable tube 16 secured at end 16a to hose 12 by swivel coupling 18 and at end 16b to nozzle 14 by a further swivel coupling consisting of U-shaped member 22, pipe section 24, hand lever 38 pivotally mounted near end 16a of tube 16, and link rod 48 interconnecting 38 and pipe 24, swivel coupling 18 allowing rotation of tube 16 about its longitudinal axis, relative to hose 12, and the other coupling allowing pipe 24 carrying nozzle 14 to be rotated about an axis perpendicular to the longitudinal axis of the tube, so that nozzle 14 can be remotely directed by manual operation of lever 38. The swivel coupling to the nozzle, Fig. 3, consists of U-shaped member 22 with arms 26, 28, and pipe section 24 pivotally mounted therebetween by means of members 33, 34 threadedly engaged within arms 28, 26, the coupling providing liquid passageways 30, 32 between the tube and nozzle (Fig. 4).